Dictionary.com
definitions

trolley

or trol·ly

[trol-ee]
noun, plural trol·leys.
  1. trolley car.
  2. a pulley or truck traveling on an overhead track and serving to support and move a suspended object.
  3. a grooved metallic wheel or pulley carried on the end of a pole (trolley pole) by an electric car or locomotive, and held in contact with an overhead conductor, usually a suspended wire (trolley wire), from which it collects the current for the propulsion of the car or locomotive.
  4. any of various devices for collecting current for such a purpose, as a pantograph, or a bowlike structure (bow trolley) sliding along an overhead wire, or a device (underground trolley) for taking current from the underground wire or conductor used by some electric railways.
  5. a small truck or car operated on a track, as in a mine or factory.
  6. a serving cart, as one used to serve desserts.
  7. Chiefly British. any of various low carts or vehicles, as a railway handcar or costermonger's cart.
verb (used with or without object), trol·leyed, trol·ley·ing.
  1. to convey or go by trolley.
Idioms
  1. off one's trolley, Slang.
    1. in a confused mental state.
    2. insane: He's been off his trolley for years, but his family refuses to have him committed.

Origin of trolley

First recorded in 1815–25; orig. dial.; apparently akin to troll1

trolly

[trol-ee]
noun, plural trol·lies, verb (used with or without object), trol·lied, trol·ly·ing.
  1. trolley.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for trollies

Historical Examples of trollies

  • Each claim had its own wires and trollies bringing up the precious "blue" to the surface.

  • The bell rang, there was a sudden bustle and wheeling about of trollies, and the train glided in.

    Mrs. Severn, Vol. 1 (of 3)

    Mary Elizabeth Carter

  • On shore a tangle of carts and trollies standing horseless, barrels, cotton-bales, wool-sacks.

  • Our booty was enormous, and consisted of two hundred heavily-laden waggons, and eleven or twelve water-carts and trollies.

    Three Years' War

    Christiaan Rudolf de Wet

  • We went to Seringapatam yesterday on trollies, nine miles back on the line by which we came from Bangalore to Mysore city.

British Dictionary definitions for trollies

trolley

noun
  1. British a small table on casters used for conveying food, drink, etc
  2. British a wheeled cart or stand pushed by hand and used for moving heavy items, such as shopping in a supermarket or luggage at a railway station
  3. British (in a hospital) a bed mounted on casters and used for moving patients who are unconscious, immobilized, etc
  4. British See trolleybus
  5. US and Canadian See trolley car
  6. a device that collects the current from an overhead wire (trolley wire), third rail, etc, to drive the motor of an electric vehicle
  7. a pulley or truck that travels along an overhead wire in order to support a suspended load
  8. mainly British a low truck running on rails, used in factories, mines, etc, and on railways
  9. a truck, cage, or basket suspended from an overhead track or cable for carrying loads in a mine, quarry, etc
  10. off one's trolley slang
    1. mentally confused or disorganized
    2. insane
verb
  1. (tr) to transport (a person or object) on a trolley
See also trolleys

Word Origin for trolley

C19: probably from troll 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for trollies

trolley

n.

1823, in Suffolk dialect, "a cart," especially one with wheels flanged for running on a track (1858), probably from troll (v.) in the sense of "to roll." Sense transferred to "pulley to convey current to a streetcar motor" (1890), then "streetcar drawing power by a trolley" (1891).

Online Etymology Dictionary, © 2010 Douglas Harper
Idioms and Phrases with trollies

trolley

see off one's head (trolley).

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.